Lito
Ansys Employee

@Ruzan, 

Based on your current entitlements/licenses, 2x (5 tasks) Ansys Lumerical Academic Research license you have: 

2×5 (10) GUI licenses for each Ansys Lumerical Product 
2x5x4 (40) solve licenses for each Ansys Lumerical Product/Solver
(i.e. 40x FDTD solve, etc.)
So you can run a single (1) simulation up to a maximum of (40×32) 1280 processes/cores 
>>> List of licensed features by product – Ansys Optics 

The enterprise license is only available for commercial accounts I don't think this will be available for academic accounts. Check with your Ansys account manager for pricing and availability. The license does not affect the performance of the application. It only provides access to the application and the additional license (solve or HPC license) simply allows the application to run with more processes/cores.

The performance is dependent on the simulation/design and the machine running the simulation. Whatever license you are using standard or enterprise, once the bandwidth limitation of the machine is reached it will not make the simulation run faster even if you increase the number of processes/cores. Or when the simulation is overspliced (running with more cores) the performance will be slower.

e.g. running a small/simple simulation like the “Microwire polarizer” at 96 processes would be slower compared to running it at 32 or less processes.